Trivia

Alya and Adrien are new students at Collège Françoise Dupont starting the school year in Miss Bustier's class, which is revealed in "Ladybug & Cat Noir".

Lila starts attending the collège in "Volpina" as a new student in Miss Bustier's class.[2]

While unknown if they will be a part of Miss Bustier's class, a different class, or not attending the collège at all, new students/friends/kids around Marinette and Adrien's age will appear in future episodes.[3]